CN111795566A - Wet molybdenum concentrate feeding and drying device and using method - Google Patents
Wet molybdenum concentrate feeding and drying device and using method Download PDFInfo
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- CN111795566A CN111795566A CN202010661178.6A CN202010661178A CN111795566A CN 111795566 A CN111795566 A CN 111795566A CN 202010661178 A CN202010661178 A CN 202010661178A CN 111795566 A CN111795566 A CN 111795566A
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- Prior art keywords
- feeding
- drying device
- molybdenum concentrate
- kiln body
- drying
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
- F26B17/18—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rotating helical blades or other rotary conveyors which may be heated moving materials in stationary chambers, e.g. troughs
- F26B17/20—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rotating helical blades or other rotary conveyors which may be heated moving materials in stationary chambers, e.g. troughs the axis of rotation being horizontal or slightly inclined
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/06—Chambers, containers, or receptacles
- F26B25/14—Chambers, containers, receptacles of simple construction
- F26B25/16—Chambers, containers, receptacles of simple construction mainly closed, e.g. drum
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D13/00—Apparatus for preheating charges; Arrangements for preheating charges
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Food Science & Technology (AREA)
- Drying Of Solid Materials (AREA)
Abstract
A wet molybdenum concentrate feeding and drying device and a using method thereof comprise a feeding bin; the feeding device is hermetically connected with the lower end of the feeding bin and is used for transferring materials thrown from the feeding bin; and one end of the drying device is embedded in the end part of the kiln body and is communicated with the inner cavity of the kiln body, the materials are dried by utilizing the high temperature and the negative pressure in the kiln body, the other end of the drying device extends out of the kiln head box and is in sealing connection with the feeding device, and the drying device and the kiln body coaxially rotate together. The wet molybdenum concentrate with the water content of about 15 percent can be directly sent into a drying device by a feeding device without being dried; the heat of the drying device and the rotary kiln is used for automatic drying, and external heat supply or heat exchange is not needed in the drying process; the molybdenum concentrate is dried and then scattered by the scattering device, so that granular materials can be effectively prevented from being produced in the feeding or drying process.
Description
The technical field is as follows:
the invention belongs to the technical field of production or refining of sulfide of metal molybdenum, and mainly relates to a feeding and drying device for wet molybdenum concentrate and a using method thereof.
Background art:
the prior art for producing molybdenum oxide by using a rotary kiln, which is adopted in China, needs to be dried before molybdenum concentrate enters the rotary kiln, and the prior art has two treatment processes, which have the defects of different degrees: 1. in a concentrating mill, the molybdenum concentrate with the water content of 15-17% after filter pressing and dehydration is dried and dehydrated by using electric energy or natural gas, so that the water content of the treated molybdenum concentrate reaches 2-4%, and the drying and dehydration process consumes a large amount of electric energy or natural gas; 2. the heat exchange device is additionally arranged on the rotary kiln, heat emitted by self-heating reaction in the roasting process of the molybdenum concentrate is led out, and the heat exchange drying device is used for drying the wet molybdenum concentrate outside the kiln body.
The invention content is as follows:
in order to overcome the defects, the invention provides a wet molybdenum concentrate feeding and drying device and a using method thereof.
The technical scheme adopted by the invention for solving the technical problems is as follows:
wet molybdenum concentrate feeding and drying device comprises
A feeding bin;
the feeding device is hermetically connected with the lower end of the feeding bin and is used for transferring materials thrown from the feeding bin;
and one end of the drying device is embedded in the end part of the kiln body and is communicated with the inner cavity of the kiln body, the materials are dried by utilizing the high temperature and the negative pressure in the kiln body, the other end of the drying device extends out of the kiln head box and is in sealing connection with the feeding device, and the drying device and the kiln body coaxially rotate together.
Add the feed bin and be hourglass hopper-shaped, including the hopper, the hopper lower extreme is equipped with the passageway, the inside a plurality of material devices of dialling that are equipped with of passageway, it can prevent to add the wet molybdenum concentrate in the feed bin and pile up the fluffy material and cause the phenomenon of expecting absolutely to dial the material device.
The material stirring device is divided into an upper layer material stirring device and a lower layer material stirring device in the channel, the number of each layer material stirring device is not less than 1, and the upper layer material stirring device and the lower layer material stirring device are arranged vertically.
The material stirring device comprises a rotating shaft, a plurality of stirring rods vertical to the rotating shaft are arranged on the rotating shaft, the rotating shaft is fixed on the channel through a bearing, one end of the rotating shaft extends to the outer side of the channel and is provided with a first gear, and the first gear is meshed with the driving mechanism.
The feeding device comprises an inlet pipe, a notch is formed in one end side wall of the inlet pipe, the notch is connected with the bottom of the feeding bin in a sealing mode, a feeding screw is arranged in the inlet pipe, one end, away from the drying device, of a rotating shaft of the feeding screw extends out of the inlet pipe, a second gear is arranged, and the second gear is meshed with the driving mechanism and is connected with the driving mechanism.
Drying device includes the cylinder, and the one end of cylinder is embedded in kiln body tip to be equipped with the row material net, the other end lateral wall of cylinder passes through second sealing device and kiln head case sealing connection, simultaneously, extend kiln head case outside the tip with feed arrangement passes through first sealing device and connects.
And a plurality of helical blades are arranged on the inner wall of the roller.
And a vibrator is arranged on the inner wall of the roller.
Drying device still includes the device of breaing up of cylinder discharge end, the device of breaing up can pulverize the granule in the discharged mineral aggregate of cylinder discharge end, avoids appearing granular material and influences desulfurization effect.
The scattering device comprises a telescopic roller, and the end part of the roller is connected with a connecting piece on the roller discharging net through a chain.
A method for using a wet molybdenum concentrate feeding and drying device comprises the steps of putting wet molybdenum concentrate into a feeding bin, starting a driving mechanism, driving a material stirring device and a feeding screw to rotate, scattering mineral materials into a feeding pipe under the driving of an upper layer material stirring device and a lower layer material stirring device in a channel, driving the feeding screw in the feeding pipe to rotate under the driving of the driving mechanism, driving the mineral materials into a roller of the drying device, enabling the roller to synchronously rotate along with a kiln body, enabling the mineral materials to move towards an inner cavity of the kiln body under the action of a spiral blade 53 in the roller, finally enabling the mineral materials to enter the kiln body through a discharging net, enabling a rod to roll on the inner wall of the kiln body along with the rotation of the kiln body, further crushing the dried mineral materials, and avoiding influence of particle materials on a desulfurization effect.
Due to the adoption of the technical scheme, the invention has the following advantages:
according to the feeding and drying device and the using method of the wet molybdenum concentrate, the wet molybdenum concentrate with the water content of about 15% can be directly fed into the drying device from the feeding device without being dried through the feeding, scattering, drying, sealing and the like; the heat of the drying device and the rotary kiln is used for automatic drying, and external heat supply or heat exchange is not needed in the drying process; the molybdenum concentrate is dried and then scattered by a scattering device, so that granular materials can be effectively prevented from being produced in the feeding or drying process; the whole feeding and drying device can effectively prevent the materials from overflowing and flying through special sealing design.
Description of the drawings:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the structure of the feed bin;
the specific implementation mode is as follows:
the present invention will be explained in more detail by the following examples, which are intended to disclose all changes and modifications within the scope of the present invention, and the present invention is not limited to the following examples;
the wet molybdenum concentrate feeding and drying device comprises a feeding bin 1; add feed bin 1 and be hopper-shaped, including hopper 11, 11 lower extremes of hopper are equipped with passageway 12, passageway 12 is inside to be equipped with a plurality of material devices 13 of dialling, it can prevent to add wet molybdenum concentrate in feed bin 1 and pile up the fluffy material and cause the disconnected material phenomenon to dial material device 13, because mineral aggregate humidity is great before drying, so the mineral aggregate in the hopper 11 also easy adhesion, perhaps glue on the lateral wall of hopper 11, long-time the words, can plug up the feed opening of passageway 12, stirring through dialling material device 13, drive the downstream of material in the hopper on the one hand, place 12 feed openings of passageway and block up, on the other hand is along with dialling the rotation of material device 13, the mineral aggregate in the hopper 11 also can fluctuate along with it, also can avoid the material adhesion on hopper 11 and 12 inner wall like this.
The material stirring device 13 comprises a rotating shaft 131, the rotating shaft 131 is provided with a plurality of stirring rods 132 perpendicular to the rotating shaft 131, the rotating shaft 131 is fixed on the side wall of the channel through a bearing, one end of the rotating shaft 131 extends to the outer side of the channel 12 and is provided with a first gear 133, the first gear 133 is in meshed connection with a driving mechanism, and the driving mechanism can be a combination of a motor and a speed reducer.
The feeding device 2 is hermetically connected with the lower end of the feeding bin 1 and is used for transferring mineral materials thrown from the feeding bin 1;
specifically, feed arrangement 2 includes inlet pipe 21, is equipped with breach 24 on the one end lateral wall of inlet pipe 21, breach 24 with add the bottom sealing connection of feed bin 1, be equipped with feeding screw 22 in the inlet pipe 21, drying device 5 was kept away from in feeding screw 22's pivot one end extends inlet pipe 21 to be equipped with second gear 23, the second gear is connected with the actuating mechanism meshing, and actuating mechanism can be the combination of motor and speed reducer.
Under the driving of the driving mechanism, the feeding screw 22 rotates to convey the mineral material entering from the feeding bin 1 to the drying device 5 in the feeding pipe 21.
A drying device 5, drying device 5's one end is embedded in the 7 tip of kiln bodies, with 7 inner chambers of kiln bodies intercommunication, utilizes the inside high temperature of the kiln bodies 7 and negative pressure to dry the material, and drying device 5's the other end extend the kiln head case 8 outside and with feed arrangement 2 sealing connection, drying device 5 and the coaxial co-rotation of kiln bodies 7.
In order to ensure that the roller 51 rotates stably, the roller 51 needs to be fixed in the middle of the head of the kiln body 7, one part of the roller 51 is positioned in the kiln body 7, the other part of the roller 51 is positioned outside the kiln body 7, one end of the roller 51 where the feeding net 54 is positioned is communicated with the kiln body 7, the heat at the head of the kiln body 7 is about 280 plus 380 ℃, and the in-kiln hot air brought by the negative pressure of the system is about 380 ℃, so that the heat and the negative pressure in the kiln body 7 are fully contacted with the wet molybdenum concentrate, the material is dehydrated, dried and roasted in the same process space, external heat supply or external heat exchange of the kiln body is not needed in the whole drying process, the dried tail gas and the roasted flue gas are the same process waste gas, the tail gas and the roasted flue gas are sent to an acid.
The inner wall of the roller 51 is provided with the plurality of helical blades 53, so that the drying path of mineral aggregate is prolonged, the drying time is further prolonged, the mineral aggregate is dried more sufficiently, and meanwhile, the helical blades 53 can also enable the mineral aggregate to be uniformly pushed forward.
The rapping device 52 is arranged on the inner wall of the roller 51, and can prevent molybdenum concentrate from being bonded on the inner wall of the roller 51 of the drying device.
The scattering device 8 comprises a telescopic roller 81, the end of which roller 81 is connected to a link 83 on the discharge wire of the drum 51 by a chain 82.
The rollers 81 can stretch and retract, the proper length can be determined according to the discharged material, the dried and discharged mineral materials can be crushed by the rollers 81, and meanwhile, the flexible connection mode of the chains 82 is adopted, so that the positions of the rollers 81 are limited, and the rollers 81 are tightly attached to the inner wall of the kiln body. The roller 51 is coaxial with the kiln body 7, and the roller 51 is partially embedded in the kiln body 7, so that the rotating speed of the roller and the kiln body 7 is the same, and the side wall of the kiln body 7 is hermetically connected with the kiln head box 8 through the third sealing device 6.
First sealing device 3, second sealing device 4 and third sealing device 6 can prevent effectively that the running of material from spilling and flying upward, have improved the product recovery rate.
A method for using a wet molybdenum concentrate feeding and drying device comprises the steps of putting wet molybdenum concentrate into a feeding bin 1, starting a driving mechanism, further driving a material stirring device 13 and a feeding screw 22 to rotate, scattering and falling mineral materials into a feeding pipe 21 under the driving of an upper layer material stirring device and a lower layer material stirring device in a channel 12, simultaneously driving the feeding screw 22 in the feeding pipe 21 to rotate under the driving of the driving mechanism, taking the mineral materials into a roller 51 of the drying device, enabling the roller 51 to synchronously rotate along with a kiln body 7, enabling the mineral materials to move towards an inner cavity of the kiln body 7 under the action of a spiral blade 53 in the roller 51, finally enabling the mineral materials to enter the kiln body through a discharging net 54, enabling a roller 81 to roll on the inner wall of the kiln body along with the rotation of the kiln body, further crushing dried mineral materials in a granular mode, and avoiding the phenomenon that the desulfurization effect is influenced by the materials.
After being put into the feeding bin 1, the wet molybdenum concentrate material falls from the channel 12, in order to prevent the wet mineral material from being adhered to the inner wall of the feeding bin and ensure that the mineral material smoothly enters the feeding pipe 21 of the feeding device, the channel 12 is provided with the material stirring device 13, after the mineral material enters the feeding pipe 21, the mineral material is fed into the roller 51 of the drying device 5 through the feeding screw 22, the roller 51 is pushed to the other end of the roller 51 under the action of the helical blade 53 in the rotating process, the heat and the negative pressure in the kiln body 7 are fully contacted with the wet molybdenum concentrate, the material is dehydrated, dried and roasted in the same process space, the whole drying process does not need external heat supply or external heat exchange of the kiln body, the dried tail gas and the roasting gas are the same process gas, the tail gas and the roasting gas can be fed into a roasting gas acid making system to prepare sulfuric acid, the resource recycling of the waste gas is realized, and finally the waste gas enters the kiln, the roller 81 rotates along with the kiln body 7 and further crushes the dried ore material, thereby avoiding the occurrence of granular materials influencing the desulfurization effect.
By the device, the molybdenum concentrate with the water content of 15-17% can be directly fed into the drying device in the rotary kiln through the feeding device, the moisture content after drying treatment reaches 4-6%, and the drying treatment capacity can reach 1.8-2 t/h.
The details of the above are not described in detail since they are prior art.
Claims (10)
1. The utility model provides a wet molybdenum concentrate throws material drying device which characterized in that: comprises a feeding bin; the feeding device is hermetically connected with the lower end of the feeding bin and is used for transferring materials thrown from the feeding bin; and one end of the drying device is embedded in the end part of the kiln body and is communicated with the inner cavity of the kiln body, the materials are dried by utilizing the high temperature and the negative pressure in the kiln body, the other end of the drying device extends out of the kiln head box and is in sealing connection with the feeding device, and the drying device and the kiln body coaxially rotate together.
2. The wet molybdenum concentrate feeding and drying device of claim 1, which is characterized in that: add the feed bin and be hourglass hopper-shaped, including the hopper, the hopper lower extreme is equipped with the passageway, the inside a plurality of material devices of dialling that are equipped with of passageway, it can prevent to add the wet molybdenum concentrate in the feed bin and pile up the fluffy material and cause the phenomenon of expecting absolutely to dial the material device.
3. The wet molybdenum concentrate feeding and drying device of claim 2, which is characterized in that: the material stirring device is divided into an upper layer material stirring device and a lower layer material stirring device in the channel, the number of each layer material stirring device is not less than 1, and the upper layer material stirring device and the lower layer material stirring device are arranged vertically.
4. The wet molybdenum concentrate feeding and drying device of claim 3, which is characterized in that: the material stirring device comprises a rotating shaft, a plurality of stirring rods vertical to the rotating shaft are arranged on the rotating shaft, the rotating shaft is fixed on the channel through a bearing, one end of the rotating shaft extends to the outer side of the channel and is provided with a first gear, and the first gear is meshed with the driving mechanism.
5. The wet molybdenum concentrate feeding and drying device of claim 1, which is characterized in that: the feeding device comprises an inlet pipe, a notch is formed in one end side wall of the inlet pipe, the notch is connected with the bottom of the feeding bin in a sealing mode, a feeding screw is arranged in the inlet pipe, one end, away from the drying device, of a rotating shaft of the feeding screw extends out of the inlet pipe, a second gear is arranged, and the second gear is meshed with the driving mechanism and is connected with the driving mechanism.
6. The wet molybdenum concentrate feeding and drying device of claim 1, which is characterized in that: drying device includes the cylinder, and the one end of cylinder is embedded in kiln body tip to be equipped with the row material net, the other end lateral wall of cylinder passes through second sealing device and kiln head case sealing connection, simultaneously, extend kiln head case outside the tip with feed arrangement passes through first sealing device and connects.
7. The wet molybdenum concentrate feeding and drying device of claim 6, which is characterized in that: a plurality of helical blades are arranged on the inner wall of the roller; and a vibrator is arranged on the inner wall of the roller.
8. The wet molybdenum concentrate feeding and drying device of claim 6, which is characterized in that: drying device still includes the device of breaing up of cylinder discharge end, the device of breaing up can pulverize the granule in the discharged mineral aggregate of cylinder discharge end, avoids appearing granular material and influences desulfurization effect.
9. The wet molybdenum concentrate feeding and drying device of claim 8, which is characterized in that: the scattering device comprises a telescopic roller, and the end part of the roller is connected with a connecting piece on the roller discharging net through a chain.
10. A method of using the wet molybdenum concentrate feeding and drying device of any one of claims 1-9, wherein the method comprises the following steps: after putting into the feeding bin with wet molybdenum concentrate material, opening actuating mechanism, and then drive and dial material device and feeding spiral rotatory, mineral aggregate is broken up and falls into the inlet pipe under the drive of upper and lower two-layer material device of dialling in the passageway, the feeding spiral in the inlet pipe is rotatory under actuating mechanism's drive simultaneously, take mineral aggregate to drying device's cylinder in, the cylinder rotates along with the kiln body synchronization, under the effect of the inside helical blade of cylinder, mineral aggregate moves to kiln body inner chamber, enter into the kiln body through arranging the material net at last, the rod rolls on kiln body inner wall along with kiln body rotation, and further pulverize the mineral aggregate of drying, avoid appearing granular material and influence desulfurization effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010661178.6A CN111795566A (en) | 2020-07-10 | 2020-07-10 | Wet molybdenum concentrate feeding and drying device and using method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010661178.6A CN111795566A (en) | 2020-07-10 | 2020-07-10 | Wet molybdenum concentrate feeding and drying device and using method |
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| Publication Number | Publication Date |
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| CN111795566A true CN111795566A (en) | 2020-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010661178.6A Pending CN111795566A (en) | 2020-07-10 | 2020-07-10 | Wet molybdenum concentrate feeding and drying device and using method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112893096A (en) * | 2021-01-20 | 2021-06-04 | 曾迪 | Belt assembly line is rejected to waste material automatic classification |
| CN113606592A (en) * | 2021-09-06 | 2021-11-05 | 神彩科技股份有限公司 | Hazardous waste slag online drying device and drying method |
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| JP2008215699A (en) * | 2007-03-02 | 2008-09-18 | Fujita Seisakusho:Kk | Rotary kiln and drying device |
| CN107568773A (en) * | 2017-09-20 | 2018-01-12 | 余姚市婉珍五金厂 | Feed attrition grinding air-dries integrated apparatus |
| CN207688541U (en) * | 2017-12-05 | 2018-08-03 | 嵊州市华力硅藻土制品有限公司 | A kind of drying and calcining integrated rotary kiln |
| CN209588592U (en) * | 2018-10-26 | 2019-11-05 | 福建汇天生物药业有限公司 | A kind of biconial vacuum drier |
| CN110579099A (en) * | 2019-09-25 | 2019-12-17 | 河南科技大学 | Flash evaporation dryer for molybdenum fine powder drying system |
-
2020
- 2020-07-10 CN CN202010661178.6A patent/CN111795566A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008215699A (en) * | 2007-03-02 | 2008-09-18 | Fujita Seisakusho:Kk | Rotary kiln and drying device |
| CN107568773A (en) * | 2017-09-20 | 2018-01-12 | 余姚市婉珍五金厂 | Feed attrition grinding air-dries integrated apparatus |
| CN207688541U (en) * | 2017-12-05 | 2018-08-03 | 嵊州市华力硅藻土制品有限公司 | A kind of drying and calcining integrated rotary kiln |
| CN209588592U (en) * | 2018-10-26 | 2019-11-05 | 福建汇天生物药业有限公司 | A kind of biconial vacuum drier |
| CN110579099A (en) * | 2019-09-25 | 2019-12-17 | 河南科技大学 | Flash evaporation dryer for molybdenum fine powder drying system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112893096A (en) * | 2021-01-20 | 2021-06-04 | 曾迪 | Belt assembly line is rejected to waste material automatic classification |
| CN113606592A (en) * | 2021-09-06 | 2021-11-05 | 神彩科技股份有限公司 | Hazardous waste slag online drying device and drying method |
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Application publication date: 20201020 |